Overview
The LTC2256CUJ-12 is a 12-bit, ultralow power analog-to-digital converter (ADC) designed by Analog Devices Inc. This device is part of the LTC2258-12/LTC2257-12/LTC2256-12 family, which are sampling ADCs optimized for digitizing high frequency, wide dynamic range signals. The LTC2256CUJ-12 is particularly suited for demanding communications applications due to its excellent AC performance and low power consumption.
Key Specifications
| Parameter | Value | Units |
|---|---|---|
| Resolution | 12 bits | |
| Sampling Frequency | 25 Msps | |
| Signal-to-Noise Ratio (SNR) | 71.1 dB | |
| Spurious Free Dynamic Range (SFDR) | 88 dB | |
| Power Consumption | 34 mW (typical) | mW |
| Supply Voltage | 1.8 V | V |
| Input Range | 1 V P-P to 2 V P-P | |
| Full-Power Bandwidth S/H | 800 MHz | MHz |
| Output Modes | CMOS, DDR CMOS, DDR LVDS | |
| Package | 40-Pin (6mm × 6mm) QFN |
Key Features
- Ultralow jitter of 0.17 ps RMS, allowing for undersampling of IF frequencies with excellent noise performance.
- Low power consumption: 34 mW (typical) in full operation mode.
- Single 1.8 V supply voltage.
- Selectable input ranges: 1 V P-P to 2 V P-P.
- Optional data output randomizer and clock duty cycle stabilizer.
- Shutdown and nap modes for power reduction.
- Serial SPI port for configuration.
- Pin compatible with 14-bit versions.
- Digital outputs can be configured as full rate CMOS, double data rate CMOS, or double data rate LVDS.
Applications
- Communications
- Cellular Base Stations
- Software Defined Radios
- Portable Medical Imaging
- Multi-Channel Data Acquisition
- Nondestructive Testing
Q & A
- What is the resolution of the LTC2256CUJ-12 ADC?
The LTC2256CUJ-12 has a resolution of 12 bits.
- What is the typical sampling frequency of the LTC2256CUJ-12?
The typical sampling frequency is 25 Msps.
- What is the signal-to-noise ratio (SNR) of the LTC2256CUJ-12?
The SNR is 71.1 dB.
- What is the spurious free dynamic range (SFDR) of the LTC2256CUJ-12?
The SFDR is 88 dB.
- What are the available output modes for the LTC2256CUJ-12?
The output modes include full rate CMOS, double data rate CMOS, and double data rate LVDS.
- Does the LTC2256CUJ-12 support power-saving modes?
Yes, it supports shutdown and nap modes for power reduction.
- How is the LTC2256CUJ-12 configured?
It can be configured using a serial SPI port.
- What is the package type of the LTC2256CUJ-12?
The package is a 40-Pin (6mm × 6mm) QFN.
- What are some typical applications of the LTC2256CUJ-12?
Typical applications include communications, cellular base stations, software defined radios, portable medical imaging, multi-channel data acquisition, and nondestructive testing.
- What is the typical power consumption of the LTC2256CUJ-12?
The typical power consumption is 34 mW.
